Datasheet
OPA657
5
SBOS197E
www.ti.com
TYPICAL CHARACTERISTICS: V
S
= ±5V
T
A
= +25°C, G
= +10, R
F
= 453Ω, R
L
= 100Ω, unless otherwise noted.
NONINVERTING SMALL-SIGNAL
FREQUENCY RESPONSE
100.5 1 500100
Frequency (MHz)
Normalized Gain (dB)
9
6
3
0
–3
–6
–9
–12
–15
–18
–21
See Figure 1
G = +20
G = +50
G = +10
V
O
= 0.2Vp-p
G = +7
INVERTING SMALL-SIGNAL
FREQUENCY RESPONSE
100.5 1 500100
Frequency (MHz)
Normalized Gain (dB)
9
6
3
0
–3
–6
–9
–12
–15
–18
–21
See Figure 2
V
O
= 0.2Vp-p
R
G
= 50Ω
G = –12
G = –20
G = –50
NONINVERTING LARGE-SIGNAL
FREQUENCY RESPONSE
100.5 1 500100
Frequency (MHz)
Gain (dB)
26
23
20
17
14
11
8
5
2
–1
–4
See Figure 1
G = +10
V
O
= 5Vp-p
V
O
= 2Vp-p
V
O
= 1Vp-p
V
O
= 0.2Vp-p
INVERTING LARGE-SIGNAL
FREQUENCY RESPONSE
100.5 1 500100
Frequency (MHz)
Gain (dB)
32
29
26
23
20
17
14
11
8
5
2
See Figure 2
G = –20
R
F
= 1kΩ
V
O
= 5Vp-p
V
O
= 1Vp-p
V
O
= 1Vp-p
V
O
= 0.2Vp-p
NONINVERTING PULSE RESPONSE
Time (10ns/div)
Small-Signal Output Voltage (200mV/div)
Large-Signal Output Voltage (400mV/div)
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
1.6
1.2
0.8
0.4
0
–0.4
–0.8
–1.2
–1.6
Large-Signal Right Scale
Small-Signal Left Scale
See Figure 1
G = +10
INVERTING PULSE RESPONSE
Time (10ns/div)
Small-Signal Output Voltage (200mV/div)
Large-Signal Output Voltage (400mV/div)
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
1.6
1.2
0.8
0.4
0
–0.4
–0.8
–1.2
–1.6
Large-Signal Right Scale
Small-Signal Left Scale
See Figure 2
G = –20